Cavani is the only complete forward on his level.
But there are others who are better at certain roles, Neymar, Rodrigo, Llorente, Etc aren't as good overall as Falcao but will still score very well if played in the right team.

I would highly recommend Fierro , In my Napoli save im in 2018 and hes worth £27 million, scores consistent goals and IMO is the best striker in the world. I'd show a screenshot but not sure how to.

Go to his profile, press Alt+F9. The screenshot gets saved as an image in Documents -> Sports Interactive -> Football Manager 2013 -> Screenshots as a png file. You can then upload it here. And yeah, Fierro is a beast